diff --git a/CHANGELOG.md b/CHANGELOG.md
index cb0a5bd29..9b490e8cf 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -45,6 +45,7 @@
   - Moved examples from the README.md to separate example files in the
     Examples folder.
   - Fix the RestoreFromRecycleBin Description
+  - Fix unnecessary cast in `Test-TargetResource` ([Issue #295](https://github.com/PowerShell/xActiveDirectory/issues/295))
 - Changes to xADGroup
   - Change the description of the property RestoreFromRecycleBin.
 - Changes to xADObjectPermissionEntry
diff --git a/DSCResources/MSFT_xADComputer/MSFT_xADComputer.psm1 b/DSCResources/MSFT_xADComputer/MSFT_xADComputer.psm1
index 5dd17e36b..69bbab6d5 100644
--- a/DSCResources/MSFT_xADComputer/MSFT_xADComputer.psm1
+++ b/DSCResources/MSFT_xADComputer/MSFT_xADComputer.psm1
@@ -478,7 +478,7 @@ function Test-TargetResource
             if ($PSBoundParameters.ContainsKey('ServicePrincipalNames'))
             {
                 $testServicePrincipalNamesParameters = @{
-                    ExistingServicePrincipalNames = $getTargetResourceResult.ServicePrincipalNames -as [System.String[]]
+                    ExistingServicePrincipalNames = $getTargetResourceResult.ServicePrincipalNames
                     ServicePrincipalNames         = $ServicePrincipalNames
                 }
 
@@ -842,7 +842,7 @@ function Set-TargetResource
         if ($PSBoundParameters.ContainsKey('ServicePrincipalNames'))
         {
             $testServicePrincipalNamesParameters = @{
-                ExistingServicePrincipalNames = $getTargetResourceResult.ServicePrincipalNames -as [System.String[]]
+                ExistingServicePrincipalNames = $getTargetResourceResult.ServicePrincipalNames
                 ServicePrincipalNames         = $ServicePrincipalNames
             }